I have very few 2,5" in comparision to 3,5" but I have a couple of 320GB oxh two 2,5" 2TB (external, powered only with USB. - the most amazing disks). I also have a regular 3,5".

For price, lets say:
320x2 = 620gb =30 USD
1 2000GB = 60 USD
The USB3 powered 2,5 2TB disks are so special I need to set a price of 150USB

PRICE 240 USD //  0.1 BTC at the moment


If you want more 2,5", down to like 80gb, I have some. Same goes for a lote more 3,5" disks, didnt include in OP due to size (smallest is an IBM disk of 9,1GB

Since this deal is odd the one, I wont pay for shipment nor escrew. If you find an escrew, find, otherwise you can send the BTC and and send hardwase with tracking number.