My MGS 80GB PS3 just died recently as well
. If your failure was the YLOD, even a repair will be temporary at best.
I went the repair rout for my YLOD (reball/reflow) but the process failed so I was not able to resurrect it, RIP!
I researched obtain another backwards compatible one but they were either refurbs from anyone other than Sony (don't trust any of them, not sure if they're on the verge of the same failure) and new ones are too expensive.
Since I still have my old PS2, I went the new PS3 route, and since I didn't want any of the bundled games, I bought the one that came with another year of PLUS.
If I hadn't had a 3rd party try to repair, I could have swapped it out for one from Sony, looking back I wish I had done that, I just didn't want to be down months.
Best of luck!
TMG