Hello just had my first 250 mile service , had to cough when they told me £160 ,is the normal next one at 750 miles what will that cost, and do I need to use them or could I do it my self .
I love the x8 best quad I have had 

you can do your own services if you follow the maint schedule and save your receipts. It doesn't sound like the price is out of the realm of normal. The first service they change they should have changed the diff fluids as well as the engine oil and filter and inspected things.

If done correctly, the first service takes time to do. You can do the service yourself. Just read the manual and figure out what you need to do. If you can't figure something out, just ask.