Well, $1500 is certainly above my budget.
I'm just looking at pricing for that SuperMicro X10SDV-4C-TLN2F. A US seller has one on offer 2nd hand and will ship to the UK for $229, $19 shipping and $57 import; total $305.
Case £50, nano 12V PSU and AC/DC adapter block, £79, 2x8GB unbuffered ECC...