We'd like to supply samples for free if we have it in stock, but we don't pay freight and sample cost.

Regarding inventory, it is 3 working days;
For customized one, it's about 15-25 working days, depended on exact quantity and order date.

Yes, to customize special optical element and coating are available here.

T/T, Alibaba online assurance payment, MoneyGram, West Union, Paypal and so on.

VY Optics is a reliable supplier not only audited on Alibaba, but also on Made-in-China, reputation and quality is life of our company, and we support Alibaba Trade Assurance.

Low value sample: EUB, E Express of China Post, which is cheap;
Light weight parcel: DHL, FedEx, TNT, UPS, EMS, SF Express, China Post;
Heavy cargo: by air or by sea, ship on pallet.
Our company enjoy a considerable discount owing to long-term cooperation with courier company.