Hi TonyM, welcome to the forums!
Basically if a deal looks too good to be true, it probably is. Always check online resellers at a site called www.resellerratings.com
to see what others are saying about them.
For an indication of how much something should cost from a reputable dealer, use our Pricegrabber service.
By checking the shops listed there, you'll also support cameralabs.
Note some cheaper dealers sell imported stock - so-called grey imports - which may not come with a full UK warranty.
Our Affiliate stores
are all reputable, so if you decide to buy from any of them, please click through to them from our affiliate page first - the price is exactly the same, but they give us a small commission, which is what pays for this site!