Larry, you have a model# for that switch? Sounds like a good deal.
D-Link DMS-1100-10TS
There's one on ebay for $230 + $70 shipping, I think it was.
I got mine at Amazon.com, it was ~$135. (Pricing bot, no-one bought or reviewed or even seemingly noticed them, so the bot kept lowering the price, down down it went, until I bought a few of them, then the price shot back up to $497.)
The competing TrendNet equivalent, is $330 from Beach Camera on Amazon, so the D-Link shouldn't sell for any more than that. Both of them have dual 10GbE SFP+ ports for uplink. You can get copper 10G SFP+ "tranceivers" for $43-$70.
Part of the problem is, these 2.5GbE-T switches, are designed for "802.11ac Wave 2" Access Points, that can utilize more than 1Gbit/sec of wireless bandwidth per AP, so these are considered "business-grade", and not a consumer-oriented 2.5GbE-T switch. They do have a fan, and an IEC AC power cord like a PC. They are also considerably larger than your average 8-port consumer GigE switch.