"Are 'The Queen' and 'Bankhaus' really considered to be the same clone? I've seen both (at least that's what the labels said) in flower and did not find them that similar."
According to Orchids Limited, they are the same clone. They offer 'Bankhaus' for $100.00 and they say it's the same clone as 'The Queen'.
If this plant was advertised as being established, then, you didn't get your money's worth. Maybe the divsion was made recently or maybe it was made 6 months ago and just hasn't rooted well, although being the summer months, it should have sent out new roots and got itself established by now.
I bought a Maudiae 'The Queen' last winter. It had one bloomed growth; one growth in bloom and one starter growth. It cost me $100.00. I repotted it and although the plant had obviously been in the pot for some time, the root system lacked somewhat. So, I cut the stem to save the plant's strength and potted it back up in fresh mix. 7 healthy growths for $80 is a good price. However, I would remove all the flower spikes in order to force the plant to do some growing and rooting instead of trying to set seed, which is what the flowers are for, from the plant's point of view.
Bottom line, if it was supposed to be established, it's not and rather than send it back, I'd ask for about half the cost refunded. If it was not specifically advertised to be "established", then, you need to accept that you got a big division of a great clone for just $80. So, now you have to sacrifice the buds and root it and establish it yourself. You can do that. Maudiae isn't hard to grow and in a year or two, you'll have a much larger, multi-growth, multi-stemmed gorgeous plant to show off. All of this of course, is assuming that the foliage is firm, green and in prime health. The roots, although few, do look healthy and able to function okay.