Is my Reel to Reel worth anything?

............do you own a boat?

pre-recorded tapes are NOT EXPENSIVE.

https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2047675.m570.l1313&_nkw=reel+to+reel+tapes&_sacat=0

I bought 500 of them on ebay, average probably under $10.

I sold 150, I let the market decide value, some went for $50 $75. but they were the exceptions, bidding wars, most sold for $10. or less.

Elliott.
Sorry but GOOD classic rock tapes are most definitely expensive in great shape.
To a collector that means the case and the label as well as the actual tape.
Sure I also bought dozens for under $10 too but you get what you pay for.
Pink Floyd?
Led Zeppelin?
Black Sabbath?

Be prepared to break out into a sweat.