MT rims are not difficult to do, one of my techs (Brian Morgan, now a police detective) did a rear tyre on Yamaha FZR1000 in 11 minutes, including pushing bike onto bench, removing wheel, removing tyre then re-fitting everything AND, it was before tyre machines were easily available in British motorcycle dealers. You don't inflate costs with free fitting although he was 'sweating like a pig' after it was done. (plus, was only 18 or 19 at te time and 'showing off') We used a bench vice with a piece of plywood to 'break the bead without damaging rim. With wider rims the original tyres almost 'fall off' once the air is out and bead broken. As for costs, some bikes are easier than others to do but expect to pay a minimum of 1/2 hr for a front but rears - anyone done a Goldwing lately? Tube tyres actually take longer as you have muchh more to go wrongIf you don't have a bench vice to do MT rims, just use a large (ish) 'C' (or 'G' clamp. One side gets padded to prevent rim damage, the 'moving' piece fits between rim and tyre on tyre-wall. Tighten screw and it pops off the internal 'bump' If people ain't willing to learn how to change tyres, don't complain about costs. BTW, any shop refusing to change tyres not supplied by them is real shortsighted, most can't buy tyres at the prices sold online. 'We' only kept a few sizes in stock for 'emergencies' in case someone got a flat or 'shop bike' needed some