Are we really sure that there are no other worthwhile monitoring CIEMs out there apart from the UERMs (and NT-6)???
I don't like the idea of buying Logitech headphones...
Take a look at the cosmic ears BA4 http://www.cosmicears.com/shop/ba4/ Here's a review on them: http://www.innerfidelity.com/content/totl-madness-24-top-line-custom-ear-monitors-reviewed-companies-john-grandberg
Note that this was the review on the neutral version, there is also a 'fun' version which has slightly more bass to counter the slight spike in upper mids. When sourced correctly these apparently come close to the JH13, for about a third of the price (if you live in EU).
Or spiral ears: http://www.spiralear.com/en/products/se5-reference/ (although these are probably not super duper neutral)
Two years ago I had the same mentality as you and refused to get the UERM. I ended up wasting so much money and time on other products.
The UERM screams quality. It is nothing like the Logitech that you know of. It's like a totally different brand and product.