Maybe so Elaine, but don’t discount other bikes just because you’ve never ridden one.
For a start, Lobsters are lovely bikes but rather soft in the rear end. I could feel the flex in the one I had and I’m guessing that a) You’re a lot lighter than me and the intended rider b) The intended rider is taller than both of us and will need something a bit more bomb-proof!
The Hardrock frame is a great starting point, but I reckon you’d get something similar even cheaper on Ebay
Just don’t be so selective, that’s what I’m saying.
For value for money, look at Trek, GT, Saracen (Yup you read that right. They make some storming bikes) and Spesh, and most other big brands.
Now, remember a new Inbred frame is only £140……?
But you’ll get a really good, complete bike, in the sales as a 2008 model for under £500, and that just can’t be beat!