But if you dont do it then they will do nothing... and it also may save you further excess tyre wear which will certainly cost more than £65 - and i would not buy it from you if the test drive showed it pulling.. i would walk away uncertain of any history or potential undisclosed crash underneath.
If you dont want to be fobbed off then ask for what is "in spec" in advance as there will be specific numbers, then once its done you should ask to see the written report even if its only a one page sheet... if it is outside you should get your money back, the problem resolved AND the tyres replaced in my opinion.
My tyre wear is heavy on the front (Diesel) but even from left to right.
Both fronts were dead after 20k miles (mostly motorway style)
Uneven tyre wear is often down to poor pressure (Over-inflated wears the center and under wears the edges), but also Swindon hits outside edges due to roundaboutspushing the front left tyre if its not rush hour
The thing that would concern most is the pull to one side, especially as it is not you being paranoid i.e. they can feel it too - it could also be failed bushes etc would that show in an alignment test... not sure but sould cause it to be out of spec.
After all this it is possible (but unusual) to get a poor quality tyre, that can cause all sorts of weird issues. The easiest test for this would surely to swap the fronts with the rears as it would be highly unlikely that both tyres on one side would be poor quality.....(AND ITS FREE)...not sure why your dealer could no suggest this ...
Hope thats some help...just me own opinions and previous experience though...someone will almost certainly correct something in there
