Help me buy my Chinese e-bike

My final choice pending your approval:

Two sellers have quoted me around $800 shipped. This is before any bargaining.

For that price, I'm getting:
500 W motor, 48 V
48 V * 13 A battery using LG cells
Shimano 21 gear 7 *3
Kenda tires
Having integrated front and tail lights is important to me; I don't want to add a clip no and keep having to recharge it every week. I can't tell if it's integrated from the pics, but the sales guy said they have lights.
No speed limit, again all I really want is 35 kmh at my disposal should I need it one day.

I realize the warranty will be basically nonexistent, but any bike that I buy with the exception of Giant would effectively have a nonexistent warranty anyway.

*thumb throttle *

For more information, please visit Seven Running.

Are you interested in learning more about Chinese Electric Bicycle Manufacturers? Contact us today to secure an expert consultation!

which I have never used before but I really want to change this, but it's not allowed.
Question 1: will I be capable of changing this myself, or can a local bike shop easily change this to a half-twist or full twist throttle? I'm pretty sure I won't like a thumb throttle.

Question 2: This bike can be made with a 350W , 48V motor as well at about a $150 cost savings. Should I save the money, making this thing around $650 shipped.

Question 3: Would you buy this bike if you were in my shoes? Again the main brand around here is Giant at a cost of $2500-$3000+ US dollars for a mid motor drive which is way out of my range. I can only spend around $800 given that I am not paid in dollars anymore.

Edit: Looks like a couple replies are coming in thanks. I live in Taiwan, so I can't buy a Radpower bike, for example. Otherwise, believe me, I would. I have every reason to believe that Alibaba is rolling the dice; but buying locally is also rolling the dice in my personal situation because everything is coming over unaltered from China, but with way higher prices. Might as well cut out the middle man.

Oh well might as well throw this model, my runner up, for your opinion:

And gentlemen, here we are:My final choice pending your approval: This is the OEM bike for which brand in the US? I believe this may be the Ride1Up 500 or the Voltbike bravo Two sellers have quoted me around $800 shipped. This is before any bargaining.For that price, I'm getting:500 W motor, 48 V48 V * 13 A battery using LG cellsShimano 21 gear 7 *3Kenda tiresHaving integrated front and tail lights is important to me; I don't want to add a clip no and keep having to recharge it every week. I can't tell if it's integrated from the pics, but the sales guy said they have lights.No speed limit, again all I really want is 35 kmh at my disposal should I need it one day.I realize the warranty will be basically nonexistent, but any bike that I buy with the exception of Giant would effectively have a nonexistent warranty anyway.which I have never used before but I really want to change this, but it's not allowed.Question 1: will I be capable of changing this myself, or can a local bike shop easily change this to a half-twist or full twist throttle? I'm pretty sure I won't like a thumb throttle.Question 2: This bike can be made with a 350W , 48V motor as well at about a $150 cost savings. Should I save the money, making this thing around $650 shipped.Question 3: Would you buy this bike if you were in my shoes? Again the main brand around here is Giant at a cost of $2500-$3000+ US dollars for a mid motor drive which is way out of my range. I can only spend around $800 given that I am not paid in dollars anymore.Edit: Looks like a couple replies are coming in thanks. I live in Taiwan, so I can't buy a Radpower bike, for example. Otherwise, believe me, I would. I have every reason to believe that Alibaba is rolling the dice; but buying locally is also rolling the dice in my personal situation because everything is coming over unaltered from China, but with way higher prices. Might as well cut out the middle man.Oh well might as well throw this model, my runner up, for your opinion: Himo C26 (It's from Xiaomi, whose other products I've found to be good quality). It's around $650 shipped.

Contact us to discuss your requirements of Adult Scooters. Our experienced sales team can help you identify the options that best suit your needs.