I'm not sure how you define expensive. https://www.fs.com/c/10g-sfp-plus-63 https://www.fs.com/c/10g-sfp-plus-63 20 bucks over MMF, 27 bucks over SMF doesn't s

I'm not sure how you define expensive. https://www.fs.com/c/10g-sfp-plus-63 https://www.fs.com/c/10g-sfp-plus-63 20 bucks over MMF, 27 bucks over SMF doesn't seem expensive. If you want to do it over single fiber rather than duplex, it's 40 bucks: https://www.fs.com/c/bidi-sfp-plus-64 https://www.fs.com/c/bidi-sfp-plus-64 25Gbps is 39 bucks over MMF, 59 bucks over SMF. 40Gbps is also 39 bucks on MMF (more expensive on SMF) I don't think any of these are very expensive. The cards are also ~same price between SFP+ and 10GBaseT from places like startech (outside of that, the 10gbaset ones are actually often much more expensive)