When you see these low costs advertised, it is almost always a "bait and switch." With dentures, you get about what you pay for, but rarely would you find even average quality for $399-$599 and that is for each, not both. Since well-fitting dentures are essential for good health, to say nothing of cosmetics, one should not consider price alone. Low cost dentures use cheap and "soft" teeth that wear rapidly and look fake, while higher quality teeth last for many years. The pink denture base made of cheap material discolors, breaks easily and usually fits poorly. I would advise that, as with hand grenades and parachutes, don't always look for the lowest cost.
New dentures may feel awkward or uncomfortable for the first few weeks or even months. Eating and speaking with dentures might take a little practice. A bulky or loose feeling is not uncommon, while the muscles of your cheeks and tongue learn to hold your dentures in place. Excessive saliva flow, a feeling that the tongue does not have adequate room, and minor irritation or soreness are also not unusual. If you experience irritation, see your dentist.
Partial dentures take up more space in the mouth than your normal teeth. Because of this, there is an adjustment period of time where you may notice difficulty in pronouncing certain words or talking in general. As dentures get re-adjusted and re-fitted, you may notice a difference in pronunciation and will have to make minor speech adjustments again.