I want to buy but how can I trust you?

Viktor:
    I want to buy but how can I trust you? that it is a real shop and it is not fake glasses 
Viktor:
    Linda thats sounds Scandinavian
Linda:
    please vsit our real review page: https://checkout.google.com/reviews/merchant/endUserReviews?sellerId=225571498352288
Viktor:
    okay thank you
Linda:
    all products are 100% authentic
Viktor:
    and about the shipping, how much to europe and how much to turkey?
Linda:
    Our shipping options:
    US $0.00 FREE: USA USPS GROUND (excl PR, HI, AK)
    US $11.95: USA UPS GROUND (excl PR, HI, AK)
    US $18.95: USA UPS 2nd Day Air US (excl PR, HI, AK)
    US $28.95: USA UPS Next Day Air US (excl PR, HI, AK)
    US $29.90: Puerto Rico, Hawaii and Alaska USPS GROUND
    US $21.95: USPS GROUND TO CANADA
    US $37.95: USPS WORLDWIDE SHIPPING
    US $38: Brazil,China,Germany,Greece,Malta,Portugal,Turkey USPS Only
    US $55: CIS(Russia,Ukraine,etc.), Estonia,Latvia,Lithuania,Norway,Poland USPS Only
Linda:
    yours: US $37.95: USPS WORLDWIDE SHIPPING
Viktor:
    ok
Viktor:
    and can you prove that they are authentic?
Linda:
    # We guarantee each product to be Authentic
    # All items are brand new, never used
    # Every eyewear model comes with certificate of authenticity, hard case and original lenses micro-cleaning cloth
    # We do not sell second grade items, close outs or store returns
    # All of our models are original and come straight from the eyewear or cosmetics producer and defect free
    # Our checkout is 100% secure (confidential transactions with the site are secured by SSL encryption), your transaction info is always safe and is never shared or sold to third parties
    # You can without doubt exchange any product you bought within 5 days for any reason
Viktor:
    okey so i have to try and see