SQL Server random sum

Requirement: three data entries in the table are randomly selected. The value of the price field in the three data entries must be between and.

  Create     Database  Db_test
  Go  
  Use  Db_test
  Go  
  Create     Table Tb_test
(
  [  ID  ]     Int     Identity  (  1  ,  1  ),
  [  Price  ]    Decimal  (  10  ,  2  )
)
  Go  
  Insert     Into  Tb_test  Values  (  200  )
  Insert    Into  Tb_test  Values  (  300  )
  Insert     Into  Tb_test  Values  (  400  )
  Insert    Into  Tb_test  Values  (  500  )
  Insert     Into  Tb_test  Values  (  600  )
  Insert     Into Tb_test  Values  (  700  )
  Insert     Into  Tb_test  Values  (  800  )
  Insert     Into  Tb_test Values  (  80  )
  Insert     Into  Tb_test  Values  (  10  )
  Insert     Into  Tb_test  Values (  20  )
  Insert     Into  Tb_test  Values  (  50  )
  Insert     Into  Tb_test  Values  ( 90  )
  Insert     Into  Tb_test  Values  (  30  )
  Insert     Into  Tb_test  Values  (  40 )
  Insert     Into  Tb_test  Values  (  60  )
  Insert     Into  Tb_test  Values  (  70  )
 Insert     Into  Tb_test  Values  (  100  )
  Insert     Into  Tb_test  Values  (  330  )
  Insert    Into  Tb_test  Values  (  520  )
  Insert     Into  Tb_test  Values  (  180  )
  Go  

 Select     *     From  Tb_test  Where     Exists  
(
  Select     *     From  
(
  Select    Top     1  Id1, Id2, ID3  From  
(
  Select  A. ID  As  Id1, B. ID  As  Id2, C. ID  As  ID3
  From  Tb_test A, tb_test B, tb_test C
 Where  A. ID  <  B. ID  And  B. ID  <  C. ID
  And  (A. Price  +  B. Price  +  C. Price)  > =     600  
  And  (A. Price  +  B. Price  +  C. Price)  <=     700  
) T  Order     By     Newid  ()
) J
 Where  Tb_test.id  =  J. id1  Or  Tb_test.id  =  J. Id2  Or  Tb_test.id  =  J. ID3
) 

If you have any questions or errors, you are welcome to correct and discuss them.