when you register with a company to get logos printed, some usually take a charge of £20 - £25, this is a one off payment, then you can have anything printed on your clothes, t shirts sweat shirts , buy cheap from tj hughs , , primark, a sweatshirt is around £6 - £10 then just take item and tell them what you want and where. usually £4+ for logo + phone number + name second hand shops sell a lot of gear cheaper to get logos on. look online for local motif / logo / embroidery firms.