Buy or make brick travertine

[bsr]

Hello

The boss wants brick travertine for the kitchen splashback (about 4m2 needed). It needs to have grey colour as well as the beige / brown.

We found these ones on sale in Topps, Ebay, Wickes - lots of places but very expensive and too small:
https://www.ebay.co.uk/itm/Silver-G...ll-Floor-Mosaic-Tile-4-8-x-9-8cm/163241127984

We also found these on Ebay. Ideal but too big:
https://www.ebay.co.uk/itm/Silver-T...6-Floor-Wall-Tiles-only-35-99-m2/201996359897

So, any suggestions where we can get cheaper silver brick travertine? If I buy the big ones, is there a way to cut them down as straight as the factory? I don't trust my Plasplugs wet cutter to be accurate enough. Hire a bridge saw? Is it something any pro could do easily? Ideally we could cut them into 4 pieces.

Thanks


bsr