Well, being of scandihuligan origin (i.e. Sweden) my online store is probably not the cheapest one for you, nor for me to be honest - but the guy running it has fantastic customer service attitude and seldom take more than an hour from you press "order" until you get the notification that is has been processed by the post office!!! (as long as you order daytime that is...)
However, the store is
www.hobbyland.se and although he doesn't have more than one or two of each model at home at any given time - as soon as one is sold it's restocked in a week-ish, and it's also a physical store hence why I try to support them.
He's pretty much having the same prices as the bigger international players and often it turns out cheaper than if I order each model separate from eBay e.g. since the shipping will drive up the price. It's no longer "free shipping" from China so that's not as cheap as it used to be.
I've always stayed true to those who give me great service and I will always by locally, regardless what it is, even if it costs 50% more (unless we're talking big money) because in the end you save money doing this since you don't have to drive around shopping and the fact that good and loyal customers will get better prices after a while. Also it's the only way to keep the local businesses from dying to the big supermarkets and shopping centres...
Sadly the sterling is rather poor with regards to value right now so you're not going to notice any fantastic prices here, but when the Swedish krona was 15 to £1 there were some nice bargains to be made! (it's 10 kr to £1 today)
Back in the days when I used to live outside Guildford in Surrey I got 15 SEK for £1 which was very nice whenever I visited Sweden because suddenly everything (apart from alcohol!!!) was cheap in Sweden?!
Scale modelling has always been popular here so there are still quite a few "hobby stores" around, but nowhere close to the amount we had back in the late 80's and early 90's...
With that said the cheapest places to buy new scale models are eBay and alibaba if you can combine shipping when buying several models, but every time we buy from these Asian sellers another hobby store will have to shut shop... Ok, not "every" time but you know what I mean.
If/when the sterling recovers, and/or the Swedish krona takes a dive again, ordering from Sweden is not a bad idea and p&p isn't too bad from here either but at the moment you and me are on the same Big Mac index so we're more or less having the same prices, I think.