Right now at Gamestop you can get a used PS3 for about $120. The disc tray will probably conk out in ten or twelve years, but for an extra $40 compared to a stand alone player that's a pretty good fee to get access to the great PS3 library. For all anyone knows standalone BD players have the same lifespan.
If you have the original models from first release they even were PS2 compatible but these probably aren't what Gamestop sells used these days.