Should I redo whole shower room?

[Colourmylife1]

I have to retile my shower cubicle and probably the floor too. It's not a very large area. However I will probably sell the house within 2-5 years as I have just got divorced and it's too big for me. The current shower cubicle is in decent condition but it IS 17 years old and new rules will probably make it look shabby. My question is is it worth spending money on retiling the floor and walls or do I do the whole shebang and replace the cubicle, shower head etc? ? Does anyone know how much the relative costs are?
I've already spent a fortune and this wasn't in the budget! Thanks!

*new tiles not new rules!

If you are going to retile I feel like you might as well chuck in a new shower suite in there too.

I am coming round to that way of thinking. I worry that the cubicle will look tatty against new tiles. Thanks.

Thanks. Mind made up! Hopefully it will help the house sell quicker if/when the time comes.