I agree that Comply are really expensive for tips that don't last, although they are very good. And baskingshark is absolutely right, treble gets a little muffled. I use silicones whenever I can, but often I find that foam gives me a much superior seal.
So go to AliExpress and look for AnjiRui tips. You'll need to know what size the inner core is--don't tell Comply, but you can look at Comply's compatibility list
https://www.complyfoam.com/content/ALL MODELS COMPATIBILITY CHART.pdf
and then type in T400 or T500 (or whatever) and AnjiRui into the AliExpress search box to get the right nozzle size. For me, they last a lot longer than a few weeks, and they are quite cheap (though of course they'll take a while to arrive). You can get a SML assortment to try if you haven't used foams before--an experiment that costs just a few bucks--and if you know your size you can get a bunch at once. Prices vary for the same thing on AE, and don't forget to look at shipping.
I've tried some other tips from Ebay and AliExpress and there are a lot that don't stay on the nozzle--for instance SrLeeking from Ali Express, skip 'em. AnjiRui are dependable. Check the shapes in the photo--some (T300, T400 etc.) are bullet shaped (like Comply Isolation) while TS series are dome-shaped (like Comply Comfort).
Here's one seller I just ordered some TS400 from. I like to get black and red ones for left and right. They haven't arrived yet but if they're like my other AnjiRui they should be fine.
https://www.aliexpress.com/item/32854585130.html?spm=a2g0s.9042311.0.0.f3cc4c4dsU3isv