Protoarc EC200 Ergonomic Office Chair
Today
Typical price$225
Amazon: the cheapest today among the stores checked
Buy on AmazonProtoarc EC200 Ergonomic Office Chair or Sihoo B100 Ergonomic Office Chair?
EC200 Ergonomic Office Chair costs $5 less today, across the stores checked.
Protoarc EC200 Ergonomic Office Chair is $5 the cheaperSihoo B100 Ergonomic Office Chair is the cheaper
The comparison in detail
Sihoo B100 Ergonomic Office Chair
Today
Typical price$230
Amazon: the cheapest today among the stores checked
Buy on AmazonAffiliate links: if you buy, the store pays us a commission at no cost to you.
Both prices over the last 30 days
First data point for one of the two: the chart appears as the days go by.
Still only a few days of data for both to read the trend; the chart fills in as the days go by.
Where is each one cheapest today?
Updated 09/11/2026
EC200 Ergonomic Office Chair
- Amazon Lowest price$225Buy on Amazon
B100 Ergonomic Office Chair
- Amazon Lowest price$230Buy on Amazon
Spec sheet side by side
| Item | EC200 Ergonomic Office Chair | B100 Ergonomic Office Chair |
|---|---|---|
| Specs | ||
| Type | Gaming chair | Gaming chair |
| General | ||
| Model changes | EC200 Ergonomic Office Chair | B100 Ergonomic Office Chair |
Other comparisons
EC200 Ergonomic Office Chair orCostway 400 LBS Big and Tall Office Chair$230Compare- B100 Ergonomic Office Chair orCostway 400 LBS Big and Tall Office Chair$230Compare
EC200 Ergonomic Office Chair orVinsetto 7-Point Vibrating Massage Office Chair High Back Footrest Black$225Compare
B100 Ergonomic Office Chair orSihoo B100 SE Ergonomic Office Chair$230Compare- B100 Ergonomic Office Chair orVinsetto 7-Point Vibrating Massage Office Chair High Back Footrest Black$225Compare
How we choose
Source: Catalog of partner stores, checked on 09/11/2026.
Lowest price seen for the product in the stores we read, on the day it was read, before sales tax. The model is the brand plus the name of the gaming chair; the versions go in the table. The price range, the median and the position use only models with a score; the price comparison looks at models whose score is within 0.5 points.
The spec score doesn’t measure comfort over long sessions or durability, and the strong or weak point reading is just a comparison of numbers, not a buying recommendation.