There are 4 types of visas in Taiwan:
- Diplomatic visa
- Courtesy visa
- Visitor visa
- Resident visa
The following fee rates apply for each visa type:
- Single Entry Visitor Visa: NT$1,200
- Multiple Entry Visitor Visa: NT$2,400
- Single Entry Resident Visa: NT$2,200
- Multiple Entry Resident Visa: NT$3,000
A
Single Entry visa means each time you leave Taiwan, your visa will expire. If you plan on making multiple trips out of Taiwan, then it's more economical to get a
Multiple Entry Visa.
After reading your situation, it seems you only got a
Single Entry visa.