Maybe not the type you're looking for, but personally I like it. And it's within the budget. This one is for EUR 15.- and in some occasions you can pick it up for free.
http://link.marktplaats.nl/288301908
The other type, where you bike (rear wheel) goes in, will cost more, but may just fit in your budget. Used, they go easily over GBP 100.-
This one seems to go quite cheap:
http://link.marktplaats.nl/288938267
@Dutch_Cheese started
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Maybe not the type you're looking for, but personally I like it.
And it's within the budget.
This one is for EUR 15.- and in some occasions you can pick it up for free.
http://link.marktplaats.nl/288301908
The other type, where you bike (rear wheel) goes in, will cost more, but may just fit in your budget.
Used, they go easily over GBP 100.-
This one seems to go quite cheap:
http://link.marktplaats.nl/288938267