Friendly VX dealer needed

[Well_Fans]

Got a mate with what looks like dud maf sensor on a S plate Vectra GSI 2.5 and he's getting quotes around the £400 mark to supply. Is this the going rate or is someone taking advantage? He's hoping to sell car for around £2k and obviously he's trying to get it repaired for as little as possible before he advertises it.

[ringram]

Second hand part from a breaker?