Cheaper Consumables for Biacore SPR (T200)

I am in the process of starting experiments on the T200. We are ordering supplies and are shocked that the vials and caps are so expensive (especially the caps). In total, with all three vial/cap sizes, we would need to spend close to $1000. Does anyone know of any good third party vendors or other vials/caps that may work for the Biacore T200?

I am talking about the vials with 7, 11, and 15 mm OD (plastic or glass) and the caps are penetrable but not airtight.

I know, they are expensive.
We only use caps when running longer experiments.
Immobilization for instance does not need capped vials in the procedure.

You could try Chromacol, but beware there are a lot of different type of vials ....

kind regards
Arnoud