Buying a used lens from an overseas eBay seller can be fine, but there are extra risks and costs to weigh.

Main things to consider:

• Shipping can erase the apparent savings, especially on a low-cost lens.
• You may have to pay import tax or customs fees depending on your country.
• If the lens arrives with a problem, returning it internationally can be expensive and you may not recover shipping or import charges.
• Communication can be harder if there’s a language barrier.
• Use tracked shipping with proof of delivery to reduce the risk of loss.

On warranty/service: for an older used lens, warranty may not matter much anyway, but support can be less straightforward with an imported item. One answer reports no problem getting service on Canon gear from Japan, while another notes gray-market concerns, so it’s safest to assume warranty help may be limited and buy based on condition and seller reliability.

For a lens like this, compare the total landed cost against domestic used sellers first. Often the local used market ends up similarly priced or cheaper once shipping and possible fees are included, with easier returns.