Hi Rachael,
You will find some second hand ones at the link below, but I’d advise you bring someone with you when buying, also if you have good negotiating skills then you will get a good bargin. I went and bought one before and it was missing a vital component 😆 😆 rookie!
http://www.donedeal.ie/find/all/for-sale/Ireland/Turbo%20Trainer” onclick=”window.open(this.href);return false;
You could also get involved in spinning classes, that either the club organises or local gym like WW for example.
Or
Get good winter tyres and just get out there, wrap up well, and find somewhere safe you can do lap after lap after lap 😎