Have you ordered from coloraid.de ? Is it as simple as paying by pay pal and adding in the notes what you want.
Yes, I ordered in 2012 and it was a simple process as I remember. I cannot remember how I paid but it may have been Paypal, otherwise by credit card. As they are so cheap, I ordered 2 and kept one in its original packing - just in case I damaged one!
I think Mike now recommends buying spares direct from Coloraid.
I cannot remember how old my original target was when I replaced it but did notice an improvement in profiles at the time, so I would recommend you replace yours too.
Terry