Kislev (like everything else) is only worth what you are prepared to pay for it.
According to feebay, that is apparently $99 a blister!

Now with that being said, if you really want those bears and characters then buy them. I am a great believer of buying what you want, as long as it does not affect your real life commitments.
Because lets face it, we are only here for a short time, may as well have fun.