I would say a flame BTA would be worth 100-150 for a 4-5".
A RBTA around 50-100 for the same size depending mainly on color as alot of RBTA dont look very rosey to me.
A GBTA 30-50 depending on color variations.

Just to give you an idea I bought my Flamethrower BTA from Bluezoo for 150+shipping(i think, it may have been free with the purchase)

Now a lemon drop BTA I would pay 200 for as I cant find one to save my life!


And I agree that it is a bta in the pic. Remember that BTA can have longer tentacles than a LTA. The whole bubbley none bubbley tentacles is still an unknown at this point as my RBTA just inches away from my FBTA has stringy tentacles while the FBTA has bubbley tentacles.