eBay is a good barometer, yes. I doubt you'll find a lot of comparison for THIS model, but my recommendation from being an almost career eBay seller would be to set your reserve at the minimum you will take, and set a Buy It now at just a smidge over the most you THINK folks might pay for it.
Getting outrageous will only put people off, but there are many willing to pay a mildly higher price on a BIN to avoid losing the bid. I have had it happen with my auctions, and do it myself as a buyer sometimes. Pay a little extra to avoid big headaches or pain later. That is an individual thing tho.
What you paid for it should not even come into consideration. What you paid is of no interest to a buyer.. only what it's worth now. You may have paid a penny for it, but that doesn't mean you should sell it for that if it's worth more, and the flip side.. if you paid 50k for it.. doesn't mean your buyer needs to make up for your purchasing mistake. It's worth whats it's worth.. today, and only what it's worth..today.
The only time what you paid matters is if you feel you would take too big a loss on it, and keeping it is the lesser of two financial evils, or when you consider what it would cost you to replace, even if you paid low and sold at a profit.
example. I paid 5k for my 17 foot Burro
. Guestimate of it's worth at the time.. avg..7.5k. I could have sold it at a profit easily, but I would have had to turn around and look for another.. that would have probably cost me ... 7.5k.. not worth the hassle as I wanted a trailer, not an investment. I keep the trailer and win.. a virtual 2.5k profit, because I didn't have to lay that out to start with.