Do you have a good relationship with any mechanics? The dye is available separately, so all you need are the glasses and a good light as mentioned. You might just buy the dye and borrow the glasses and a good light. A good light would be the most expensive part of the proposition. Heck, a shop may do it for/with you for not much more than the cost of the components themselves which might be the way to go if this were to be your only need for the light and glasses.

The dye works really good if the area around the car is not too bright and if you have a good UV light. You don't even need to clean the suspected area before testing.