From my experience, forget it. Nobody will take one. I did a two year deal with a national company in a well known diy store, who i was told were still owned by a national supermarket chain, which they were not.
The rep, who incidentally made the first contact with me, told me that i would be the only carpet cleaner. like an idiot i fell for it. I designed my own card then payed £250 deposit, with another £250 3 months later and so on which as you say works out at £10 + vat on a two year deal.
The rep even told me at the time of signing up, to go to the store and take cards so to get more of your monies worth from the scheme. This i used to do. I had 2 jobs in total in 2 years, and the cheeky b------ds even phoned me up after 18 months to ask me to go into another store as i must be popular due to the number of cards that they were replacing for me, whenin fact i was the only one taking them. I subsequently told em to get stuffed.
Another annoying point is that with a diy store, the rental carpet cleaning machines were still in the store. Before you do a scheme like this, go and stand in your local supermarket, and watch the number of people who go through the tills and don't even see the card dispenser let alone take a card. Also look at the empty spaces in some card dispensers where the empty card slots are filled by the cards of the people running the scheme.
Can i ask if you are a new scheme, as they usually pick on new businesses as they are easy to sell to. What you will also find is that you will not get anything in writing which you could use to get out of this type of contract, it's all verbal.
£10 a week seems attracive, but spend the money on good quality leaflets. For £1000 100000 A5 full colour glossy double sided leaflets printed. Think of the profit for these people. All the have to do is get cards printed for you, pay a commission to the store. They must be laughing their heads off. I think the only reason you are offered two stores is people are getting wise to it. Seriously give it some thought before committing yourself.
Dave