No Accucraft locos of any scale come with r/c. In fact, NO live steamers, TMK, come with r/c. Fitting it is either a matter of doing it yourself, not too difficult, or getting one of a number of professionals to do it for you. Figure on a couple of hundred for that, less if you get a Shay of any kind. That is because the Shay runs so slowly, even at full throttle, that all you really need to do is to control the direction. My three-cylinder Accucraft Sahy, the first ever bought in the UK from the late and much-missed Steve Warrington, has such a set-up. You simply fire it up, and when the pressure come up, open the direction of travel whichever way you want to go. Here it is running at Caythorpe a few years back on John Squire's fine layout......
Mine is not zackly as issued - it has the DJB double-sized gas tank and a fine adjustment lubricator - the latest version, which costs around £2500, NOT dollars, has this as standard. It will happily pull everything you can put behind it - on one occasion it had fifty-six items of Accucraft stock behind it and didn't appear to notice. Like all indirect drive, geared locomotives, it sniggles at inclines that would bring a rod drive loco to a thrashing and scrabbling halt.
Aster have also revised their 28-ton Alishan Shay in recent years, making a good model into an exemplary one - it even has an axle-driven water feed pump and a trailing connector to a water car. Figure on finding one for around £2250 mark - they soon sold out.
Smaller Gauge 1 locos from Accucraft include the B4 and the new Victory, and there is also a range of electric locos like the GWR 14XX - all are quite at home on smaller G1 layouts, if that is your inclination, but by smaller I DO mean at least five-foot radius curves. this means that you won't be able to run just about every larger G1 model locomotive.
Davey B above mentions Accucraft's beautiful 7/8th scale locos. soon to be joined by the 'Wren'. If that scale interests you, then you'll need to talk to Si at Model Earth - he'll be at Peterborough.