Where is the picture of the bike? What year is it?
The current model performer - as on gtbicycles.com is a pretty generic entry level bike. You won't (WILL NOT!) find a better Redline for the money, but I'm not sure you won't find other bikes out there in general that are better for your cash. I would spend a little time doing some pricing research for online shops in your neck of the woods.
It's not a BAD bike, it's just entry level. There are no major flaws, but there is very little additional information from the GT website about that bike. It is likely tri-moly with low-grad parts... but it seems to have decent design.
It would be similar to a lot of entry level Haros, or other bikes around the same price.
Keep in mind that brand new, built up, front a bike shop it is 200 pounds, so not a lot more and a bike shop will build it and warranty it for you.