Sometimes, when the moons are full and the planets align, and if you have the crown gems, you can try asking customer support persistently and politely to sell you the mount.
I can't guarantee that this will work, but it couldn't hurt to try.
starkerealm wrote: »The spider, you'll need to ask customer service. They do, sometimes, allow you to buy stuff out of season, but it's a crap shoot. Just try being polite, and asking if it's possible a couple ways. Worst they can do is say no.