These are what I've been using for my Spider: https://www.amazon.com/gp/product/B07KXS8V7N/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1

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I had a different tube previously, also off Amazon, but it only lasted about 300 miles (stock tubes also lasted about 300 miles). Have done about 100 miles on the new tube, so don't know if it's any better yet - but I've had more issues with other tubes and the stem valve being made of metal that's too soft, and hard to access. These are pretty slick.

I came across these on Amazon. Not sure if one is better fit than the other listings.

(2-Pack) 10x2 Replacement Inner Tubes 10'' x 1.95/2.125 | Compatible with Bike Schwinn Trike Roadster/Tricycle/BoB Revolution Motion - Made from BPA/Latex Free Premium Quality Butyl Rubber https://www.amazon.com/dp/B07KXS8V7N/ref=cm_sw_r_cp_api_glt_fabc_WGCYABE374KGGH4018SJ

Any particular ones that you suggest?

I got a chat going with Apollo support. And it turned out quite helpful.

I was clear how ridiculous $25 to ship a piece of rubber was, he sent me a link to amazon as alternative.https://www.amazon.com/gp/product/B07KXS8V7N/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1&pldnSite=1

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But those ones aren't in the Canadian store.