It is seasonal in a sense that they've been doing different variations of the vanity case from one collection to the next. in the last collection, the vanity case only came with the pearl crush chain. for 21k, its back to the vanity with top handle. they'll likely follow a similar pattern going forward given the popularity of this style and price point (although they just had a huge price increase on the vanity in the last month). anyways, the black rectangular vanity in lambskin is probably the most popular color so unless you had this on reserve before the collection launched, the likelihood of getting black or any color for that matter as a walk-in is pretty much impossible (at least where I am). hope this helps.
Ok thanks! I'll probably try to reserve one from the next collection then. Do you know what is the current price of the vanity case in lambskin? And how much was the increase?