Motoreiter knows far more about these things than I do, but I would caution against using road transport for bikes in Russia. We sent our bikes from Mariinsk to Moscow by road, and they arrived in a shocking state. It's possible that this was down to the people who built the crates, rather than the truck company, but you should bear in mind that the roads in Russia can be extremely uneven and are constantly under repair, so bikes have to be expertly packed to prevent damage. As it was, both our bikes arrived at the Moscow depot looking as if they had spent most of the journey on their sides! Roynie had quite a lot of superficial damage to his (broken indicators, missing bar end weights, broken heated grips, missing headlight protector ...). The crate of mine was completely smashed. The bike didn't appear to have suffered too much, but needed a new battery, as the electrolyte had drained out of it - presumably after being tipped on its side.

Also, shipping by truck will be much slower. Our bikes took 10 days from Mariinsk to Moscow, whereas the train journey would have been 3. You don't have to travel with the bikes on the train. There, I would agree with motoreiter. Indeed, why not fly?!

I don't know the mileage from Moscow to Almaty, but 25k roubles isn't cheap, when you consider that Moscow to Irkutsk cost 22,300k by train.