A lot of people have raved about Glyder’s space dye mantra crops: they released lots of space dye colorways last year that look a lot like lulu’s various WAFS wunder under crops. At only $52, they are quite an affordable alternative, and I’ve only heard good things about their opacity and quality.
Just today, Glyder released violet calypso space dye, a gorgeous mix of purple and blue. It actually looks similar to the blue tropics space dye that North America never got, although Glyder’s version looks more vibrant (a plus in my book!). I’ve never owned ANY space dye (lulu or not), but these are gorgeous, so I must say that I’m pretty tempted! They’re available in sizes XXS-XL.