Can't say I've seen one in plain white, but I did pick up a Berghaus one in
TK Maxx two days ago, 1/2 price was £7.
It's one of these insect repellent, sun screen lightweight fabrics, reversible, pale blue on one side, beige on other. I picked it up for myself, but surprise, surprise Cal spotted it and claimed it.
If you're near a TK Maxx, I know it can be a horrible shop to rake through, but they can have some gems. The hats were in the gents section.
How to get ahead? Get a hat!!