Slightly below SGD$500 (no GST incurred btw. heh).
Personally, it's tad too early for me to judge as I have just received it the previous weekend. But, comparing QC & price ratio, I will rate it slightly below Carmina. The latter being better. Do note that Andres Sendra's RTW shoes are open channel sole stitching unlike Carmina's closed channel sole stitching. I prefer the latter anyway.
However, what I fancy about Andres Sendra is due to their highly interactive
website that offers a wide range of customisation tool/options to their clients. Their occasional sales are enticing too! Last month, they had sales (15% off) in lieu of Father's Day. Currently, clients will get a FREE pair of shoe trees with every shoe purchase. This is applicable till 28 April 2015. On top of that, Andres Sendra offers gorgeous patina concepts too. Finally, their sales dept are prompt in replying queries as well; notably Mario Rodriguez.
All in all, if one wants to venture into unexplored, mid-tier realm, I suggest giving Andres Sendra a try.