Thanks for the feedback, I just checked the logs and I can see that you did a search for "offers" so there haven't been any added (that one was from a good few months ago so I have now set it to expired). If the offers and products are confusing I'll definitely work to simplify that to stop people bouncing as you did.
The actual product search is just below though (
http://www.finditforless.co.uk/search/sony-xperia-z3).
However the cheapest is £297.99 for a non compact model and on Google Shopping the cheapest non compact is £302.95
here)
The compact that is £250 on Google Shopping can be found here
http://www.finditforless.co.uk/search/sony-xperia-z3-compact for £246.99.
The cashback really is simple, you just sign up and then buy through the site and then the cashback is credited to your account (on find it for less) automatically once the store has confirmed it. Sign up using the code ACORN and you get £1 free
So how it would benefit you over Google Shopping is that you would save about £5 by finding it cheaper, get your £1 free credit and around £5 or £6 cashback. (Cashback % is quite low on sim freemobile phones from some stores unless you take out contracts where it is quite a lot more, this is set by the stores).
Then the theory with the offers is that you found a good price on your Sony Xperia Z3, so you turn it into an offer (just press the add as offer button next to the search result), this will then share it with everybody else using the site and will also be indexed into Google. So if anybody else is looking for an offer on a Z3 they may stumble across your offer that you found and buy it. In which case you will then keep receiving cashback everytime somebody else buys it!
Rinse and repeat with washing machine, TV, ps4 games, clothes and it soon builds up.