We see it all the time. Most merchants are charging $45 while one charging $23. It may look tempting, but be careful.
The explanation is usually simple:
1. The source of the test strips is unknown.
2. The expiration date is short.
3. The box maybe damaged.
4. The test strips are from another country.
5. All sales are final. No returns.
For some, this is fine. However, for most it's a another unneeded worry when buying test strips.
Remember, xeteor always lets you select expiration date before purchase, to avoid this situation. Read more here.