Only buy when there's massive discount. Mother's day, 11.11, black friday etc. otherwise don't buy. The normal price is almost doubled the discounted price.
Tips
1. Don't buy the highest end unit (the price is marked up super high due to the bluetooth,music,touchscreen and all other unnecessary function for elderly people) Mid range is perfect, low range is fine too, but since you're already buying, don't skim on it and avoid getting the lousiest quality and regret later.
2.Try until you satisfy. no try, no buy. Every chair is different and every person have personalized liking for massage power/style, etc. Higher price, patented machine, etc means nothing if the cheaper one could do the same, and most importantly, sometime 500-1000 diff in price actually differs very little in quality.
3.Check for free maintenance, repair cost, leather maintenance etc. Due to a lot of moving parts, after certain period bound to have loosened/ degraded parts due to constant moving frictions. maintain properly for longlasting and consistent performance.
4.Go to a mall where they have concentrated massage chair shop located next to each other so you don't need to travel here and there to test it out. And don't massage 30 minutes -1.5 hour after meals, different body different timing, but preferable before meal.
5.Ask if the leather can be cleaned using wet cloth (some can and most can't), if can't ask for additional free gift (usually already have some sort of useless gift - eg. cycling machine, head massager etc)
6.Ask for delivery time etc. because nowadays they make on order. hold them responsible for the delivery time, because they shift priority around.
Good advice, must be experienced.