8 in stock across country, but with home delivery being available, despite not showing up on the Argos page - check stock via postcode and the home delivery option comes up.
Just ordered one and went through alright with free delivery for Wednesday. No idea how many they have in stock for delivery though - so get in quick if you want it. http://www.argos.co.uk/static/Product/partNumber/8950994.htm
EDIT: Looks like it's gone out of stock for home delivery but might just be because I've already ordered one.
Showing stock in only the following stores, though:
Thurrock Retail Park
Croydon Church Street
Bridgend Shopping Centre
Plymouth Transit Way