The JCrew Heavyweight Cabana Dress Mystery

This is my first attempt at the "taking pics in the fitting room" exercise. I already had a couple of spontaneous episodes where I loved the stuff that I was trying so much that I couldn't help taking my cell phone out of my bag and shooting some pics to watch calmly at home. But this time it was a complete different story: it was something that I had planned.
So last Saturday I walked into the Rockerfeller Center store armed with my camera. Once in the fitting room I felt a little bit like a thief or, worst, one of those guys in the old, pre-Internet, days of the knockoff industry who used to wander around at night with their camera and, faking nonchalance, took pictures of the goods displayed in the windows of high-end stores.
First thought: Is this legal? Second thought: Can the SA hear the click of my camera and throw me out of the store? However, once shaken away these unfounded worries, the experience became quite funny and I tried lot of stuff just for the sake of taking the pics. The new arrival section was pretty small and I didn't see anything that looked like something that I'd like to wear, so most of the items that I've tried have already been discussed in other blogs. The only one that I want to write about is the Heavyweight Cabana dress (item 13436), because it was the first time that I saw it in a store, even if it has been on the website since January.

First mystery: they had three colors in the store, none of which seems to correspond to one of the colors offered on the website. They had a lavander that I didn't like for this kind of dress (a beach dress), a dark charchoal (could it be the black sold on web?) and a pink that can't possibly be the bright cantaloupe of the website. I wanted a light color so I have tried the pink on:



I didn't like it but this is not what I want to talk about. I liked this dress when it came out in the January catalog and at some point back then even considered buying it as we had our annual family vacation in a warm place coming up in February. So I KNOW the price, which is $59.50. Then, after the vacation I forgot about it and the last time that I checked the website the price was ...$78! Yes, it went up. Strange, right? I immediately checked the catalog, just to make sure that the $59.50 price that I remembered wasn't a dream. It wasn't, the catalog read $59.50. I tried to think of a reason that could justify the price increase: maybe the whole sale cost of this particular cotton went up? I wasn't ready to accept that the price on te website was purily a mistake.
Until this Saturday, when I saw the dress in the store. The tag said 59.50.

Have you bought this dress? Do you think that the price on the website is a mistake or you have an explanation? Have you noticed any other oddity in the JCrew pricing recently?