$57.99 – Power supply voltage: 220VAC 50/60Hz, Power: 0-100W, Host size: 106*106*61mm, Item Name: Tesla coil, Logistics size: 350*235*195mm, Flash length: 0-10cm (adjustable by knob), Logistics weight: 0.9Kg.
Latest update shows that Stark Long Arc Bluetooth Music Tesla Coil Palm costs $57.99 (in Banggood). Basically copy coupon, view price history or create e-mail price alert. You probably want to know what is the best price?
Latest price update (UTC time):
Banggood ($57.99)
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database. Good or bad price? Looks like a good price to me (average is $61.04).
Link: Banggood product page
Price: $57.99
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): 2022ACTIESNL, Terence, Tabby20, 2203ActiesNL, BG2bddfb, BG1efeb0, 8Couponsde, MVC8SPRING, 8BGwbg2204, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, BG8RCToy, BGTOYSALES, BGRCT10, BGissam186
(these coupons are old, so probably won’t work)
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for Stark Long Arc Bluetooth Music Tesla Coil Palm. The lowest price was: $52.99.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).