It looks like these may have changed design in 2001.  Shoot me a PM if you have spares in good condition.

My opinion?  Buy new boots and rings.

Any used that you get will be the same if not worse condition than what you have now.

I know that new is the best answer when it comes to rubber, but if anyone has any almost-new parts I thought I'd save a few bucks.

The 01 boots dont fit the 89-00 bike all that well so - If you have K&N filters, you may need to get a block of wood or other thing and put that behind the filters and sorta prevent the boots from spitting out the carb.

I hate the freaking 01 and later boots, they also dont last as long - I've seen them go in 3-4 years ... chinese garbage.

Cool.
Buddha.

So who has the best prices on new parts?  Bike Bandit, Ron Ayers, eBay, and SuzukiPartsHouse.com all have about the same prices after shipping.

https://www.partzilla.com/

$28 each for the intake boots and o-ring and whatever, it's all one piece as far as the dealership is concerned. I ordered from Suzuki of Sarasota in Florida. Trying to keep it OEM on the intake track, better quality means no vacuum leaks!

I have a set off of a 2000 with only 6600 miles on them.  I just bought the bike and decided to replace all the carb-related rubber parts as a precaution. After removing and inspecting the originals, they were OK. I also have new O-rings for them. I'll PM you.