I'm having difficulty finding reasonably priced GPS modules which actually work. I intend these to work in a clock. I've bought 4 "Neo" like modules recently from 2 different Aliexpress retailers. Out of the 4 modules, only one works.
Of course I know all that stuff about you get what you pay for etc. but I've almost always got usable electronic components in the past even if a clone/copy etc. and am prepared to accept a few quality issues (and long delivery times) for a reasonable price. But I find this high failure rate for these devices somewhat uncharacteristic.
Having said that, I invoked the Aliexpress dispute procedure for the first batch of 2 modules from the first retailer, both of which were completely dead, and got a more or less instant refund.
For the one failed item of two I received from the second retailer I'll probably do the same. The failure here is somewhat more subtle. I get a constant stream of NMEA messages but packed with default settings because it never sees a satellite. I have now discovered this due to the module not producing any power for the active antenna. When an active antenna is connected via a DC blocking capacitor and the antenna separately powered, it does show some sign of life.
But this is just a nuisance. Part of the problem is the Aliexpress delivery confirmation system. When you confirm the delivery you are put under pressure to simultaneously evaluate the whole thing, making the evaluations somewhat meaningless and useless for supporting the decision to buy a specific item. For example, many evaluations will be something like this:
(*****) five stars. Quick delivery, well packed, looks great. Not tested yet.
In fact, the evaluation I left for the first retailer above looked similar. There will be many purchasers who simply leave no message but the default 5 stars. Now I have been scouring Aliexpress for "Neo-like" GSM modules which have a number of useable (and plausible) reviews. I find very little, even for those items which claim large numbers of sales.