Crystalline glaze vase, Shiwan production ware, China

So I have a crystalline vase remarkably similar to what I see on 1stDibs for a handsome sum. Oriental Heritage calls it "A decorative piece of little value". So which is it and what makes a crystalline vase a genuine "Shiwan". Any thoughts? Thank you in advance.
                                                                                 
                                                                 

                                         newby JW

The CHINA mark would imply that it is a piece made for mass export in large quantities.

1stdibs is a sales site for dealers targeting buyers with more money than sense. One dealer, who also has an antiques shop, told me that many like him list items on there at higher prices than his shop so they can show customers they are getting a ‘bargain’. Knock at least a 0 or 50% off their prices.

As far as this vase is concerned it’s a mass produced decorative piece. According to Wiki "Shiwan ware is Chinese pottery from kilns located in the Shiwanzhen Subdistrict of the provincial city of Foshan, near Guangzhou, Guangdong". Many types of pottery is made there, probably including this vase. From the latter half of the 20thC. Decorative value only. Check completed listings on ebay for an idea of value - one sold for £9.

Very pretty though, I would enjoy having it on display

Worth that much?? Thank God I bought it at the neighborhood Goodwill for $9 U.S..Thank you for the education. Appreciated.