Aqara has two variants of their Aqara Curtain Driver E1, Aqara Curtain Driver E1 (Track Version) and Aqara Curtain Driver E1 (Rod Version).
Aqara Curtain Driver E1 (Track Version) is cheaper, retailing for S$138.90, while the Rod Version retails for S$148.90. You can get them both on Souky’s Shopee Store or Souky’s Lazada Store. You can get it cheaper than the price I indicated, as discounts are often offered on either platform.