[ZeoRangerV]

I'm UK-based too so hopefully can answer most of your questions

As far as prices go, your best places to go are Nippon Yasan (only for the Super Mini-Pla line though, they don't stock the mainline Super Sentai stuff), Amiami, Hobbylink Japan or Hobbysearch. Personally I stick to Nippon Yasan and Amiami for pretty much everything, but different strokes etc. They all have their advantages and disadvantages.

One important distinction to make though is that Nippon Yasan mark their parcels down, while the others will (as they're legally obligated to) put the full price on the top. This is important for UK buyers because it means N-Y stuff evades the dreaded customs fees, whilst the other places are all at risk of being stung by them. I try to get everything from N-Y now simply because I can't afford the additional £15+ every time I order something.

The Shogun Megazord set is EXCELLENT. One of the best model kits I own. Nicely articulated individual figures and a great combined mode.

I'm on the fence about getting KishiRyuOh but other than that I'm dropping out of the mainline Super Sentai minipla so won't be able to offer a whole lot of thoughts on it, but it looks like a pretty solid kit. Of course being cheaper than the Super Minipla line means the plastic quality is cheaper (though not a lot in it, if anything its the Super Minipla line is overpriced) and the kit will be A LOT more reliant on stickers for detailing.

Even though sites are listing KishiRyuOh as discontinued right now, it'll almost certainly be back in stock once it's released. Same thing always happens with them - they go out of stock after initial preorders and then come back in for a while around release.

Not sure about set 02 not being there but 03 being there, but again I'd say just keep an eye out and they'll probably show up closer to release.

If you have any other questions let me know!