The prices I just received .........
1783-BMS10CGN $2,305.50
9300-ENA $1,230.00
Jezz, list or practically list prices! The 9300-EN is list anyway.
If the 1783-NATR follows list, then $1010 for reference.
You should read the manuals for the configuration. The Stratix 5700 is a fully managed switch, which is nice if you need the features of a managed switch but if you only need NAT translation it's probably overkill.