I think robbiee speaks in more general level, as I have seen a similar trend. Yes, currently you can buy EUR very cheaply, and Europeans who come here are "poor", but if you stay long term in either place, you see the real difference. The DR applies new taxes to consumer products all the time, nevertheless there is not much difference in anything public.
We have done quite a few calculations, and if we got our facts right, the only things cheaper in the DR (compared to some EU countries) are housing, water and some fresh produce. Of these three, only the fresh produce comes with comparable or better quality.
With some conditions and disclaimers, the electricity in the DR is also cheaper, IF you stay below the 10 peso threshold. Once you go there, then forget it. Also the quality obviously does not compare.
The pricing in La Sirena has become ridiculous (for domestic and imported products) and since we also need to buy baby-products, pricing there is just more ridiculous, with terrible quality. Will need to switch to Amazon.
Coffee (1 lb Santo Domingo regular) was 156 DOP or something, now the cheapest I have found is 200 DOP in colmado, 210 DOP in supermarkets.
the most significant point, for a foreigner to move to the DR, is to calculate in which CURRENCY he/she makes a living.
if life earnings/salaries/profits of biz, pension etc etc are earned in US$, well, then for very most products and services we have the same prices since many years, no significant changes/rises.
of course it looks very different/the opposite, if such person has a income in DR-Pesos, then the person is loosing a significant portion of purchase-powers every year.
Mike