I suspect the full-time job is actually her blog, rather than the contests per se:

> The operator of a popular sweepstakes blog, she has made the hobby into a full-time job.

So far in 2019, she's won prizes equivalent to £5,389, or about the same as working 110 hours/month at minimum wage[1]. Given that £2,000 worth (Majorca trip) is tagged as "Group win", and most of it appears to be stuff you couldn't sell at retail price, or just couldn't sell, I find it difficult to call that a full-time job.

[1] (£5,389/6 months)/£8.21 an hour = 109 hours