The stock of the halogen material is random, normally it will take additional 10-25 working days for material refilling, we'll confirm with you about the specific lead time after order processed.
For 1-layer prototype PCB, we do single-side soldermask by default. If you need double-sides soldermask, please leave message for "Special Requirement Note".
Additional cost would be charged for the PCB with gold area covers more than 15%, but the gold area could only be calculated after file been checked, hope you can understand.
Thanks for your support! We'll go over your feedback in detail to optimize our service. Once your suggestion is picked up as the most valuable, we'll instantly contact you in email with a $100 coupon contained.