Oris Aquis Titanium 43.5 strap–trying to find a more affordable alternative

Hello there,
I'm trying to find a cost effective way to purchase a strap for my Oris Aquis 43.5 Titanium (01 733 7730 7153-07 8 24 15PEB)
Does anyone have one available or can they point me in a good direction?
Thanks!
Nick