Title, can't find anywhere on eBay (or maybe my eyes are broken) as to where I can get a cart for JP 1.0 LTTP. Anyone know a place where they're purchasable?

eBay is the best source I'm aware of. I see at least one listing that claims to be 1.0 as of this posting, but I am not personally familiar with this seller: https://www.ebay.com/itm/VERSION-1-0-Speed-Run-Legend-of-Zelda-Link-to-the-Past-Super-Famicom-USA-SELLER/163148199362

Oh wow, thanks! I didn't see that one. After a quick look at the picture it looks like the punch code on the back of the cassette says "08", so I'm assuming its a 1.0 cassette, though who knows if the back was swapped or not.

Another random off topic question, does the game seem to have a lively scene for speed running, more so does the game seem sort of stale in terms of discovery of new tech? Or is the game fairly optimized down to a science at this point? Sorry if it 's a weird question.

The game has a pretty friendly and active community. The best way to get involved in the community is to check out the discord: https://discord.gg/RnsPtE

Earlier this year a new glitch was found that saves about 10 seconds. The WR holder just got a new record a couple weeks ago, and is still grinding to save even more time. Lots of small optimizations are being found frequently to save a handful of frames here and there. The community is definitely active and people are constantly exploring new ideas and grinding out new personal bests.

I see I see, thank you so much to the both of oyur for all your swift and descriptive answers! I'vebeen really thinking of running this game since Zelda is one of my favorite game series of all time, and I love the SNES on top of it.