I finally had a browse round here the other day and was pleasantly surprised. It's a large store with a lot on offer, nothing over £1 in price, and many things which are good quality - not the rubbish I'd expected if I'm honest!
You'll find many things for the car, home and garden, a large range of toys and party goods, stationery, batteries, gifts, confectionery, and much more. There are nicely packaged gift bags of Potpourri for £1 (which will cost five times that amount in M&S) and many other nice, small, gifts. The CD and DVD cases are very good value as well. There are also many recognised brands, including Cadbury, Mr Sheen, Flash, Colgate, and many others.
My only criticism is that it's a very busy store (that's why I hadn't been in sooner) and you have to queue for a while.
Definitely worth a look though. Why pay more? read more