Op - there are a couple of threads already about SA, one here in the SW region (although mainly focused on the Bournemouth area - but lots of general information too) and pages and pages of info and views in the main general thread. If you are not up for reading all the existing comments then SA is not for you - it can be time consuming and hard work!
I agree with what Paris69 said - you are going to get lots of varing views. I also agree with a lot of his other comments but not his comment that "quite a few are WG's"....... i suspose it depends on your definition of a "WG". if you think that as a number of SA ladies end up in an arrangement and have sex with a guys that they wouldn't otherwise, makes them a WG, then yes a number of them are. But think of them as WG makes it very hard not to treat them as that and if you treat them like that, most will ignore you or ghost you.
Like all online sites, SA has a range of "types" from scammmers, to pic sellers to a few who are really WG's (ie just selling sex) but there are some ladies who want to be treated well, taken to nice places, do some fun things with someone they like and get a nice gifts and some money (whether by ppm or an allowance).
I have also noticed that a number of ladies have a genuine liking for "older guys".
As Paris69 said, there are some good session to be had that are good VFM but higher end (eg an over night for £250) but if you are looking for cheap sex, you won't find it on SA.