Not sure of what this figure should actually go for. Saw one sold on Ebay last week for $250.00, and it didn't even have the sticker sheet. I am placing mine as $200.00 BIN w/ BO. Transformers TigerTrack eHobby Yellow Sideswipe MIB C9 - eBay (item 110565234913 end time Jul-31-10 11:18:08 PDT) Interested? Send me an offer. The condition is fantastic. Really a true gem for anyone's collection.
I have seen these go for $200.00 in this condition but more recently I do not think that the high prices of a few years ago are relevant. I think you are ok with your OBO and just wait for the best offer
I remember when those used to sell for 100 bucks, guess its worth more now. 180 is a good price if its selling for 250 but your going to wait awhile for a buyer. You might even have to relist it. Its funny, I had my 09 Crimson Striker Cobra Vipers on ebay for 200 dollars and nobody bid on them. So I relisted them for 120 (What I paid for them) and it shot up to 200.
A member listed his MISB piece for USD $150 (less than 3 months ago) Don't know if he sold it by then.
I had one extra and Sold it these guys do not go higher than $125.00 unless You find someone desperate and with the money to pay more than that.