Feel Unique Pick N Mix 5 Samples
The original link doesn't seem to be working anymore so try this https://www.feelunique.com/c/beauty-fragrance-samples-3-ways-to-try
and select the pick n mix option.
Pick up to five sample to try from a variety of brands. You have to pay £3.95 shipping free but Feel Unique will email you a gift voucher for £3.95 to cover the cost of shipping. The gift voucher can't be used on a second pick n mix and you can only do it once a month.