Digital luxury villa vouchers

I am looking to get some digital villa vouchers made for my luxury villa rental company. Something tropical with tropical sunset/palm tree kind of design... yet classy enough that I can sell to my high end clients so they can give them to friends, family as gifts. Ideally these will be designed well enough so that down the line if this idea works that I can have them printed onto quality card. So please bear this in mind when designing.

I will need a a £250, £500, £1000 and £5000 voucher designed. The same design but perhaps just in different colours to distinguish between them. I will need to have them coded or at least be able to update the numbers of them so each one is registered to the specific client that buys them. So there will need to be a voucher code section for me to add new numbers/letters on myself when someone buys them.

I'd like to ideally see some examples of what you think you can do for me before I commit.

My logo is below and a link to my website here so you get the feel of what my business is about www.sunsetsuiteinternational.com

I've set the budget to very low, just to see who get's in touch. Look forward to working with some of you soon.