AppPriceData
Observed local App Store prices with one dated reference-currency comparison.
Among 5 observed Apple App Store storefronts, Taiwan has the lowest reference-converted download price for Mechanical Engineering Book: $60.00 (about $1.87 using the 2026-08-15 reference-rate snapshot).
Rows are sorted by the USD reference conversion when a supported exchange rate is available. The local price and currency remain the original source values.
| Rank | Storefront | Local price | USD reference | Observed | Details | Official store |
|---|---|---|---|---|---|---|
| #1 | TWTaiwan | $60.00TWD | $1.87 | August 11, 2026 | Country price | App Store ↗ |
| #2 | USUnited States | $1.99USD | $1.99 | August 10, 2026 | Country price |
| App Store ↗ |
| #3 | CNChina mainland | ¥15.00CNY | $2.23 | August 11, 2026 | Country price | App Store ↗ |
| #4 | FRFrance | 1,99 €EUR | $2.30 | August 15, 2026 | Country price | App Store ↗ |
| #5 | GBUnited Kingdom | £1.99GBP | $2.69 | August 7, 2026 | Country price | App Store ↗ |