I generally don't, but I have a few times:

Transformers: It was a "dream theme", designed by Gomez, it was hyped up as having a "transforming playfield". Even though I played it a ton while I had it, it was ultimately a letdown & sold.

X-Men LE: We were all on a "Borg high" from Tron, there was no Premium, hand drawn art was awesome....what could go wrong? Everything. SOLD.

Metallica LE: Still had faith in Borg with Lyman attached, art was awesome, love the band...what could go wrong? Not much, really. Early code was missing a lot, but it was still a ton of fun -and once Lyman got done with it, it was a masterpiece. Still have it.

Goatf***ers: Dream theme + Yeti = instant sale. Thankfully I played it before it shipped (not to mention insert-gate)...cancelled & got refund before it shipped.

Rick & Morty: I love everything about TNA & what Scott Danesi brings to the table, and I love the show. Boom, ordered without playing. I got my R&M last year, and it's been my go-to game. Love everything about it. I know many units needed a lot of tweaking - mine plays phenomenally & I've barely done anything to it. Killer game, bolted to floor.

Ultraman: Sticking with my newfound Spooky love & love for Japanese pop-culture and campiness...took the plunge. Like GB, I have played it before delivery...unlike GB, I'm hanging in there. Code is early, but it's gorgeous & plays nice...potential is there for code to make it great.

Godzilla LE: I'm officially in the Cult of Elwin. I love JP Prem, I'm buying a AIQ this weekend...everything about Godzilla looks amazing to me...I'm in.