I've not used that exact model, but I have a lot of fun in my Sevylor Tahiti (http://www.inflatable-kayaks.co.uk/canoes-kayaks/sevylor/tahiti.htm) which I picked up for under £100.
I wouldn't want to carry it far or use it for anything too serious, but it's cheap, simple and actually pretty durable. Plus it fits in a car boot or on public transport.
Sevylor are now owned by Coleman and have quite a good reputation in the inflatables market – though more for pool toys and the like….