I'll just paste the info:
Description
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OSTRO
1. Normal strength weight/2, superhard+lighter/3, top-level competition version
Corresponding price: 4000 5000 6500 RMB in three versions
The models (regular/high version) that are currently being made in domestic shelves are relatively good
There are three versions of OSTRO 49 size and weight comparison
Low version: 1070g (domestic 700) geometric non l: l
(Not recommended) (Poor painting level, geometric accessories are not 1:1, customer feedback is not good, not recommended to start)
Normal version: 925 grams (imported 700+imported T700 l: l
(High cost-effectiveness) Moderate painting, high cost-effectiveness, and normal delivery time
Maximum version: 825 grams (30T+imported 800) with almost the same factory strength. l: L (competition, comfort)
Ultra light (with good oil filling and weight)
(Weight after fine soil filling, frame tolerance of plus or minus 10 grams)
⬇️
(Paint coating may have different weights according to different colors)
UD dew carbon+30-40 grams
Color gas:+50-60 grams
After refinement, weight:
https://www.aliexpress.com/store/1102991493?spm=a2g0o.detail.0.0.539cufBBufBBBrIt's about $1000 vs $1330CAD for the lower tier vs top tier. Maybe cheaper, I'm only familiar with the Tier 3.