If you’re a fan of tower defense games and love the quirky underwater world of Bikini Bottom, then SpongeBob Tower Defense on Roblox is probably one of your favorites. With a wide range of characters, units, and limited-time items, this game brings strategic fun with a nostalgic twist. But when it comes to trading your hard-earned or lucky-pulled units, things can get a bit confusing—especially if you’re new to the game.
You might find yourself asking, “Is this a fair trade?” or “How much is this unit really worth?” Don’t worry—we’ve got you covered. We’ve created this detailed and regularly updated SpongeBob Tower Defense Value List to help you navigate the trading world like a pro!
🔄 Why Use a Value List in SpongeBob TD?
Trading is a major part of the SpongeBob Tower Defense experience. However, without a reliable reference, it’s easy to get ripped off or overvalue units that have dropped in popularity or demand. Our list helps players avoid bad trades, make strategic decisions, and understand which units are worth holding onto or flipping for profit.
Whether you’re aiming for Secret Units, Limited Mythics, or even just want to upgrade your collection of Rare or Epic Units, this value list is your go-to guide.
🌀 SpongeBob TD Value List – All Units and Tradeable Items
🌟 Limited Units
These are typically only available during special events or for a short time. Their rarity and demand often make them extremely valuable.
| Unit | Value Range | Demand |
|---|---|---|
| Olympian Spongebob | 800K – 1M | High |
| Secret Agent Star | 50K – 100K | High |
| Lion Fish | 15K – 80K | High |
| Easter Bunny Spongebob | 7K – 75K | High |
| Soaring Starfish | 4K – 60K | High |
🔒 Secret Units
These are some of the most sought-after characters in the game. They’re typically hard to unlock or require significant grinding or luck to obtain.
| Unit | Value Range | Demand |
|---|---|---|
| Robot Mantis | 2.5M – 3M | Very High |
| Dungeon Master | 1M – 2M | Very High |
| King Jellyfish | 600K – 700K | Very High |
| Alaskan Bull Worm | 500K – 600K | Very High |
| Squidasaurus Rex | 450K – 600K | Very High |
| Dennis | 400K – 600K | Very High |
| Hash Slinging Slasher | 350K – 400K | Very High |
| Spongehenge | 180K – 200K | Very High |
| Dream Gary | 80K – 100K | Very High |
| Sea Bear | 75K – 90K | Very High |
| Cyborg Plankton | 17K – 25K | High |
🧙♂️ Mythic Units
Mythic units are powerful and usually perform well in tower defense waves. Many of them are fan-favorite characters with unique animations or abilities.
| Unit | Value Range | Demand |
|---|---|---|
| Tattletale Strangler | 90K – 110K | Very High |
| Handsome Plankton | 85K – 100K | Very High |
| Caveman SpongeBob | 80K – 90K | Very High |
| Birt | 60K – 90K | Very High |
| Sir SpongeBob | 20K – 50K | Very High |
| Gladiator Patrick | 20K – 30K | Very High |
| Madame Hagfish | 20K – 30K | Very High |
| GG Rock SpongeBob | 20K – 25K | Very High |
| Lord Poltergeist | 15K – 25K | Very High |
(Full list continues in-game and on our value tracker site. Don’t forget to bookmark this page for updates!)
💎 Legendary Units
These characters are more accessible than Secrets or Mythics but still carry decent value—especially if they’re from event drops.
| Unit | Value Range | Demand |
|---|---|---|
| Spot, Dark Knight, JoJo | 1K – 1.5K | Medium |
| Glove World SpongeBob | 800 – 1.4K | Medium |
| Flying Dutchman, Dream Patrick | 300 – 500 | Low |
| Handsome Squidward | 100 – 200 | Low |
🧪 Epic, Rare, and Common Units
If you’re just starting out, you’re likely to pull a lot of these. They’re great for early-game progress but have low trading value overall.
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Epic Units: Baby Prunes (up to 100K), Barg N Mart, Granny Tentacles
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Rare Units: Pearl, Karate Sandy, Krusty Krab
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Common Units: Patrick, SpongeBob, Squidward – all under 10 value
While these units aren’t trade heavyweights, having duplicates can still be useful for evolving characters or flexing full team themes.
🎁 Tradeable Items
Items and boosts can also be traded in SpongeBob TD. Their value often fluctuates depending on availability, updates, or seasonal content.
| Item | Value | Demand |
|---|---|---|
| Ultra Secret Hunter | 100K – 120K | Very High |
| Season Pass | 75K – 90K | High |
| 2x Spatulas / XP / Trait Hunter | 55K – 75K | High |
| Ultra VIP | 40K – 60K | Medium |
| Shiny Hunter | 15K – 20K | Medium |
🔄 How to Trade in SpongeBob Tower Defense
If you’re new and ready to make your first trade, here’s a quick step-by-step guide:
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Reach Level 15 – Trading is locked for newer players.
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Launch the Game and head to the main lobby.
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Look for the Flying Dutchman NPC to the left of the Play area.
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Interact with him to see players currently in your server.
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Choose a player and send a trade invite.
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Once accepted, a trade window will open—make sure the values match fairly!
🔐 Important: Always double-check the unit name, rarity, and trade value to avoid scams.
📈 Tips for Smart Trading
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Follow Demand Trends – Units in high demand will net you better trades.
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Keep an Eye on Updates – Events can spike or drop values overnight.
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Use This List Regularly – Bookmark it to stay ahead of the market.
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Be Patient – Sometimes it’s smarter to hold a unit until its value rises.
🤔 What’s Your Favorite SpongeBob TD Unit?
Let us know in the comments or vote in our poll! Whether it’s the powerful Robot Mantis or the hilarious Caveman SpongeBob, every unit has its fans.
📌 Final Thoughts
The world of SpongeBob Tower Defense trading can be wild, but it’s also incredibly fun once you know what you’re doing. With this comprehensive value list, you’re now equipped to trade smart, avoid bad deals, and build your dream team from the depths of Bikini Bottom.
